Alexander g



(No Model.)

A. G. BROWN.

STOP MOTION FOR SPOOLERS, TWISTERS, AND DOUBLERS. No. 267,487. PatentedNov. 14, 1882.

WITNESSES Z4JTC( M5 /W ATTORNEYS.

N. PETERS. Phcto-Lilhogmpher. Wnshmglum v c.

Unite STATES ALEXANDER G. BROWN, OF WILLIAMSTOWN, MASSACHUSETTS,ASSIGNOR TO HIMSELF AND DANFORTH & 00., OF SAME PLACE.

STOP-MOTION FOR SPOOLERS, TWISTERS, AND DOUBLERS.

SPECIFICATION forming part of Letters Patent No. 267,487, dated November14, 1882.

(No model.)

To all whom it may concern:

Be it known that I, ALEXANDER G. BROWN, of Williamstown,in the county ofBerkshire and State of Massachusetts, have invented a new and ImprovedStop-Motion for Spoolers,

Twisters, and Doublers, of which the following is a full, clear, andexact description.

The object of my invention is to provide a new and improved device forautomatically arresting the spindle of a spool in case one ofthe threadsthat are being wound on this spool breaks.

The invention consists in the combination, with a rotatingspool-carrying spindle provided with a transverse rod or bar, of as manypivoted cheek-levers as there are threads to be wound on the spool,which check-levers are each provided with a loop through which a threadpasses, whereby when the threads are unbroken the check-levers will beraised, permitting of a rotation of the spindle; but when a threadbreaks the corresponding check-lever drops, the transverse rod of thespindle strikes against the end of this check-lever, and the 2 spindlewill be stopped immediately.

Reference is to be had to the accompanying drawings, forming part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures.

Figure 1 is a cross-sectional elevation of a spooling or twisting frameprovided with my improved stop-motion. Fig. 2 is a part of alongitudinal sectional elevation of the same on the line a: m, Fig. 1.Fig. 3 is a part of a sec- 5 tional plan view of the same on the line 3y,

Fig. 1. Y

The frame A is provided with two horizontal slats or strips, B, in whicha series of vertical spindles, G, are journaled, which spindles are eachadapted to carry a spool, D. Only one spindle is shown; but any desirednumber can be arranged in a row. The spindles U are each provided with apulley, E, around which a (lriving cord or belt, F, passes, which cords5 also pass around a driving-cylinder, Gr, journaled in the frame, andprovided with suitable devices of the usual construction for revolvingit. The thread-bobbins H are mounted on spindles projecting upward froma rail, 1, of

the frame A, and are arranged in groups-one group for each spooleachgroup containing as many bobbins as there are to be strands in thecompleted or twisted cord or thread on the spool D. From the bobbins Hthe threads J pass over a friction-roller, K, journaled in the frameAabove the bobbins, and from this roller each thread passes through aseparate loop, L, on a separate check-lever, M, pivoted on a platform ofthe frame A, between the bobbins. and the spindles O. The loops L areattached to the upper edges of the check-levers M, between the fulcrumof the levers and the spindles G. The inner ends of the levers M-thatis, the ends toward the spindles O-are provided with an angular downwardprojection or 6 bend, N. From the loops L the threads pass over aroller, 0, pivoted to a longitudinal rail, P, uniting the upper ends ofthe standards P of the frame A. From the roller the threads passthrough-a loop or eye, Q, projecting from an ordinary transverse rail,and from this loop Q the threads pass upon the spool D. The inner endsof the levers M reach 'to the longitudinal line connecting the centersof the bottoms of the spindles 0. Each spindle is provided with atransverse rod or bar, R, which is located a distance above the bottomsupporting rail, B, less than the height of the end projections, N, ofthelevers M. When the levers M are lowered the lower ends of theprojections N rest on the bottom rail, B. It the transverse bar R islocated very near the bottom rail, B, the projections N at the ends ofthe check-levers can be dispensed with, for in this case the thicknessof the levers will be sufficient to stop the rod R.

The operation is as follows: As the threads are wound upon the spoolDthere is sufficient tension in the threads to raise the levers M to suchan extent that the lower ends of the projoctions Not these leversM willbe above the transverse rod R of the spindle, thus permitting this rodor bar to swing in a circle or rotate without striking any of theprojections N. As soon as any thread breaks the correspond- 5 ing leverM will drop, and the transverse rod or bar R will strike against theprojection N of this lever, whereby the spindle will be stoppedimmediately. As soon as the ends of the thread are again united thelever that has dropped will be raised by the thread, and the spindle canrevolve again. Thus if any thread that is being wound upon a spoolbreaks, the spindle of this spool will be stopped and a loss of threadon the spool will be avoided, and the twisted thread wound on the spoolwill always be of uniform thickness. Any number of bobbins H can becombined with one spool; but there must. be a lever M for each thread orbobbin.

The within-described device can be used on twisters, doublers, spoolers,or quilling-t'rames.

I am aware of the English Patent No. 2,480 of 1859, and therefore lay noclaim to such invention, my invention being confined to the preciseconstruction and arrangement of parts as pointed out in the claim.

Having thus fully described my invention, I claim as new and desire tosecure by Letters Patent The levers M, pivoted to a platform between thebobbins and spindle O, and each provided with a loop, L, between itsfulcrum and spindle O, and with a downward projection, N, on its innerend, in combination with the bobbinspindles, the bar It, rollers K 0,loop Q, and spoolspindle O, substantially as and for the purpose setforth.

ALEXANDER Gr. BROWN.

\Vitnesses:

K. DANFORTH, PUsnNELL DANFORTII.

